Arisaema exappendiculatum commonly known as Castrated Jack, is a quirky and fascinating species native to Nepal and Tibet. The name exappendiculatum refers to the plant’s unique feature: the absence of the male appendage typically found in other Arisaema species. This plant is renowned for its distinctive whorled, umbrella-like foliage that sits atop tall, slender stems.

In late spring to early summer, it produces an almost closed, erect spathe, which adds to its intriguing appearance. Flowering typically occurs around November in milder climates.

This hardy, winter-dormant perennial prefers good drainage and semi-shade, making it ideal for woodland gardens or shaded borders. Its unusual form and late-season flowering offer an exotic touch to any garden.